Azollapinnata, a floating water fern widely and wildly and found in both hills and tropical Terai of Nepal, has unique character of fixing di-nitrogen (N2)in association with Anabaena azollae that can be utilized as a nitrogen substitute or sometimes can replace chemical nitrogen required to rice crop. A number of past research evidences prove that Azolla has been found beneficial for increasing rice yields. Most recently, this species of Azolla has been collected from different parts of the country and maintained in the Soil Science Division, NARI, Khumaltar , Lalitpur district and Regional Agriculture Research Station (RARS), Parwanipur, Bara district of Nepal. Field experiments of Azolla on rice were carried-out during the year 2014/15 in Parwanipur, Bara and Khumaltar, Lalitpur with different rice varieties in two different agro-ecological zones to evaluate the effects of Azolla pinnata in rice production…………………….

Azollapinnata, a floating water fern widely and wildly and found in both hills and tropical Terai of Nepal, has unique character of fixing di-nitrogen (N2)in association with Anabaena azollae that can be utilized as a nitrogen substitute or sometimes can replace chemical nitrogen required to rice crop. A number of past research evidences prove that Azolla has been found beneficial for increasing rice yields. Most recently, this species of Azolla has been collected from different parts of the country and maintained in the Soil Science Division, NARI, Khumaltar , Lalitpur district and Regional Agriculture Research Station (RARS), Parwanipur, Bara district of Nepal. Field experiments of Azolla on rice were carried-out during the year 2014/15 in Parwanipur, Bara and Khumaltar, Lalitpur with different rice varieties in two different agro-ecological zones to evaluate the effects of Azolla pinnata in rice production…………………….